GN caboose by Atlas.
Several years ago, atlas brought out these nicely detailed cabeese. One thing for sure is I could never paint those window trims, etc like the factory paint job.
I wanted to install marker lights in them but couldn't disassemble them: the box had no instructions nor anything on their web site. Emailed atlas service and they called with a day or two and informed me how to remove the base from the super structure (nice, quick service). Glad I didn't try to force it as the end sills have tiny plastic pins that go into the end of the frame. After separating the two ends, the sides need to be bowed out from the side tabs to remove the base frame.
Used a Kadee #5 brass insert for the wheel contacts. Drilled/tapped the plastic truck frame.
Now have 13 cabeese lighted.